Stackoverflow is a bunch of impolite and arrogant people, liking to downvote everything, without letting any comment to let a chance to understand or to improve a question or an answer. Really, the more rude community on the Internet.

Bravo! Works as expected. Does not work on the main StackOverflow homepage, but I almost never go there anyway (probably like most people, I end up on a specific StackOverflow page via search engine results). Would be nice if it also worked on other network sites (CrossValidated, etc).